<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <form action="/student/update">
       <input type="hidden" name="id" th:value="${studentObj.id}">
      姓名：<span th:text="${studentObj.name}"></span><br>
      性别：<span th:text="${studentObj.sex}"></span><br>
      生日：<span th:text="${studentObj.birthday}"></span><br>
      学历：<select name="edu" th:value="${studentObj.edu}">
              <option>高中</option>
              <option>大专</option>
              <option>本科</option>
              <option>研究生</option>
          </select><br>
      <input type="submit" value="修改">
    </form>
</body>
</html>